prEN 15416-1

Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with specimens perpendicular to the glue line (Glass house test)

This document specifies a method of determining the ability of adhesive bonds to resist long-term sustained load applied vertical to the glue lines. It is applicable to adhesives used in load-bearing timber structures.
It is suitable for the following applications:
a)   for assessing the compliance of adhesives according to EN 15425 and EN 16254;
b)   for assessing the suitability and quality of adhesives for load-bearing timber structures;
c)   for assessing the effect on the bond strength resulting from long-term sustained load at cyclic climate conditions.
This method is intended primarily to obtain performance data for the classification of adhesives for load bearing timber structures according to their suitability for use in defined climatic environments.
This method is not intended to provide data for structural design, and does not necessarily represent the performance of the bonded member in service.

Klebstoffe für tragende Holzbauteile ausgenommen Phenolharzklebstoffe und Aminoplaste - Prüfverfahren - Teil 1: Langzeit-Zugprüfung senkrecht zur Klebfuge bei verschiedenen Klimabedingungen mit Prüfkörpern senkrecht zur Klebstofffuge (Glashaus-Prüfung)

Dieses Dokument legt ein Verfahren zur Bestimmung der Beständigkeit von Klebstoffverbindungen gegenüber einer senkrecht zu den Klebstofffugen einwirkenden Langzeitbelastung fest. Es ist anwendbar für Klebstoffe, die für tragende Holzbauteile verwendet werden.
Das Verfahren ist für folgende Anwendungsfälle geeignet:
a)   zur Beurteilung der Übereinstimmung von Klebstoffen mit EN 15425 und EN 16254;
b)   zur Beurteilung der Eignung und Qualität von Klebstoffen für tragende Holzbauteile;
c)   zur Beurteilung der Auswirkung von Langzeitbelastung bei zyklischen Klimabedingungen auf die Klebfestigkeit.
Dieses Verfahren ist hauptsächlich dafür vorgesehen, Leistungsdaten für die Klassifizierung von Klebstoffen für tragende Holzbauteile entsprechend ihrer Eignung zur Verwendung in festgelegten klimatischen Umgebungen zu erhalten.
Dieses Verfahren ist nicht dafür vorgesehen, Bemessungswerte bereitzustellen und gibt nicht zwangsläufig die Leistungsfähigkeit des verklebten Bauteils im Gebrauch wieder.

Adhésifs pour structures portantes en bois de type autre que phénolique et aminoplaste - Méthodes d’essais - Partie 1 : Essai de charge soutenue à long terme dans des conditions climatiques cycliques avec des éprouvettes chargées perpendiculairement au joint de colle (essai de la serre)

Le présent document spécifie une méthode de détermination de la capacité des joints adhésifs à résister à une charge soutenue à long terme appliquée à la verticale des joints de colle. Il s’applique aux adhésifs utilisés dans des structures portantes en bois.
Il est adapté :
a)   pour évaluer la conformité des adhésifs à l’EN 15425 et à l’EN 16254 ;
b)   pour évaluer l’aptitude à l’utilisation et la qualité des adhésifs pour les structures portantes en bois ;
c)   pour évaluer l’effet sur la résistance à la rupture d’un joint de l’application d’une charge soutenue à long terme dans des conditions climatiques cycliques.
Cette méthode est principalement destinée à recueillir des données de performance pour classer les adhésifs destinés aux structures portantes en bois en fonction de leur aptitude à l’utilisation dans des environnements climatiques définis.
Cette méthode n’est pas destinée à fournir des données pour la conception structurelle et elle ne reflète pas nécessairement la performance de l’élément collé en service.

Lepila (razen fenolnih ali aminskih) za nosilne lesene konstrukcije - Preskusne metode - 1. del: Dolgoročna preskusna napetostna obremenitev pravokotno na vezavo pri različnih podnebnih razmerah s preskušanci pravokotno na lepilno linijo (preskus Glasshouse)

General Information

• Status: Not Published
• Publication Date: 18-Sep-2025
• ICS: 83.180 - Adhesives
• Technical Committee: CEN/TC 193 - Adhesives
• Drafting Committee: CEN/TC 193/SC 1/WG 4 - Tests for 'Novel' load bearing adhesives for wood
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 25-Jul-2024
• Due Date: 26-Jul-2024
• Completion Date: 25-Jul-2024
• Ref Project: oSIST prEN 15416-1:2024 - Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with specimens perpendicular to the glue line (Glass house test)

Relations

• Revises: EN 15416-1:2017 - Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with specimens perpendicular to the glue line (Glass house test)
• Effective Date: 14-Jun-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2024
Lepila (razen fenolnih ali aminskih) za nosilne lesene konstrukcije - Preskusne
metode - 1. del: Dolgoročna preskusna napetostna obremenitev pravokotno na
vezavo pri različnih podnebnih razmerah s preskušanci pravokotno na lepilno
linijo (preskus Glasshouse)
Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 1: Long-term tension load test perpendicular to the bond line at varying
climate conditions with specimens perpendicular to the glue line (Glass house test)
Klebstoffe für tragende Holzbauteile ausgenommen Phenolharzklebstoffe und
Aminoplaste - Prüfverfahren - Teil 1: Langzeit-Zugprüfung senkrecht zur Klebfuge bei
verschiedenen Klimabedingungen mit Prüfkörpern senkrecht zur Klebstofffuge
(Glashaus-Prüfung)
Adhésifs pour structures portantes en bois de type autre que phénolique et aminoplaste -
Méthodes d’essais - Partie 1 : Essai de charge soutenue à long terme dans des
conditions climatiques cycliques avec des éprouvettes chargées perpendiculairement au
joint de colle (essai de la serre)
Ta slovenski standard je istoveten z: prEN 15416-1
ICS:
83.180 Lepila Adhesives
91.080.20 Lesene konstrukcije Timber structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2024
ICS 83.180 Will supersede EN 15416-1:2017
English Version
Adhesives for load bearing timber structures other than
phenolic and aminoplastic - Test methods - Part 1: Long-
term tension load test perpendicular to the bond line at
varying climate conditions with specimens perpendicular
to the glue line (Glass house test)
Adhésifs pour structures portantes en bois de type Klebstoffe für tragende Holzbauteile ausgenommen
autre que phénolique et aminoplaste - Méthodes Phenolharzklebstoffe und Aminoplaste - Prüfverfahren
d'essais - Partie 1 : Essai de charge soutenue à long - Teil 1: Langzeit-Zugprüfung senkrecht zur Klebfuge
terme dans des conditions climatiques cycliques avec bei verschiedenen Klimabedingungen mit Prüfkörpern
des éprouvettes chargées perpendiculairement au joint senkrecht zur Klebstofffuge (Glashaus-Prüfung)
de colle (essai de la serre)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 193.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15416-1:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Principle . 7
5 Apparatus . 7
5.1 House for weather exposure . 7
5.2 Test jig . 7
5.3 Testing machine . 9
6 Method . 10
6.1 General. 10
6.2 Selection of timber . 10
6.3 Production of the test sticks . 10
6.4 Cutting of the test pieces and build-up of the test batches . 12
6.5 Test procedures . 12
6.5.1 General. 12
6.5.2 Climate for duration of load tests . 13
6.5.3 Tensile test procedure . 13
7 Expression of results . 13
8 Requirements . 13
9 Test report . 14
Bibliography . 15

European foreword
This document (prEN 15416-1:2024) has been prepared by Technical Committee CEN/TC 193
“Adhesives”, the secretariat of which is held by UNE.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15416-1:2017.
This document is intended to harmonize the provisions in EN 14080:2013, B.2, EN 15497:2014 and
EN 16254:2023, Annex B and EN 16351.
It differs with respect to the following:
a) consistent specification of the test method for the determination of the long-term performance at
varying climate conditions in one standard;
b) reference to EN 16254 for EPI adhesives added in the scope;
c) Figure 1 and Figure 2 for connection device added;
d) alternative cutting scheme of the components of the test sticks presented in Figure 4.
This document includes the following significant technical changes with respect to EN 15416-1:2017:
a) dated reference to EN 302-3 changed to an undated reference;
b) terms and definitions added as Clause 3;
c) glue line thickness for different application areas in 6.1 described in more detail;
d) use of spacers with different thickness for preparation of test sticks added in 6.3;
e) editorial changes.
Introduction
This document is one of a series dealing with adhesives for use with timber structures, and is published
in support of the EN 1995 series, Eurocode 5: Design of timber structures. The series consists of five
classification and performance requirements for adhesives for load-bearing timber structures, phenolic
and aminoplastic adhesives (EN 301), one component polyurethane adhesives (EN 15425), emulsion
polymer isocyanate adhesives (EN 16254), two component epoxy and polyurethane adhesives for glued
in rods (EN 17334) and for on-site repair of cracked timber structures (EN 17418) and all together twelve
test methods (EN 302-1, EN 302-2, EN 302-3, EN 302-4, EN 302-5, EN 302-6, EN 302-7 and EN 302-8 and
EN 15416-1, EN 15416-3, EN 15416-4 and EN 15416-5).
These European standards have the following titles:
EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures — Classification and
performance requirements
EN 302, Adhesives for load-bearing timber structures — Test methods:
— Part 1: Determination of longitudinal tensile shear strength
— Part 2: Determination of resistance to delamination
— Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity cycling
on the transverse tensile strength
— Part 4: Determination of the effects of wood shrinkage on the shear strength
— Part 5: Determination of maximum assembly time under referenced conditions
— Part 6: Determination of the minimum pressing time under referenced conditions
— Part 7: Determination of the working life under referenced conditions
— Part 8: Static load test of multiple bond line specimens in compression shear
EN 15416, Adhesives for load bearing timber structures other than phenolic and aminoplastic — Test
methods:
— Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with
specimens perpendicular to the glue line (Glass house test)
— Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in bending shear
— Part 4: Determination of open assembly time under referenced conditions
— Part 5: Determination of minimum pressing time under referenced conditions
EN 15425, Adhesives — One component polyurethane (PUR) for load-bearing timber structures —
Classification and performance requirements
EN 16254, Adhesives — Emulsion polymer isocyanate (EPI) for load-bearing timber structures —
Classification and performance requirements
EN 17334, Glued-in rods in glued structural timber products — Testing, requirements and bond shear
strength classification
EN 17418, Two-component epoxy and polyurethane adhesives for on-site repair of cracked timber
structures — Testing, requirements and repair strength verification
Safety statement
Persons using this document should be familiar with the normal laboratory practice, if applicable. This
document cannot address all of the safety problems, if any, associated with its use. It is the responsibility
of the user to establish appropriate safety and health practices and to ensure compliance with any
regulatory conditions.
Environmental statement
It is understood that some of the material permitted in this document can have negative environmental
impact. As technological advantages lead to better alternatives for these materials, they will be eliminated
from this document to the extent possible.
At the end of the test, it is recommended that the user of this document take care to carry out an
appropriate disposal of the wastes, according to local regulation.

1 Scope
This document specifies a method of determining the ability of adhesive bonds to resist long-term
sustained load applied vertical to the glue lines. It is applicable to adhesives used in load-bearing timber
structures.
It is suitable for the following applications:
a) for assessing the compliance of adhesives according to EN 15425 and EN 16254;
b) for assessing the suitability and quality of adhesives for load-bearing timber structures;
c) for assessing the effect on the bond strength resulting from long-term sustained load at cyclic climate
conditions.
This method is intended primarily to obtain performance data for the classification of adhesives for load
bearing timber structures according to their suitability for use in defined climatic environments.
This method is not intended to provide data for structural design, and does not necessarily represent the
performance of the bonded member in service.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 302-3, Adhesives for load-bearing timber structures — Test methods — Part 3: Determination of the
effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength
EN 92
...